Abrasive particle throwing wheel assembly



J. E. BOWLING, JR 3,241,266

March 22, 1966 ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY 4 Sheets-Sheet1 Filed July 10, 1963 1 NVEN TOR Jasqphi'clwardfiowlbgfi ATTORNEYS March22, 1966 BOWLING, JR 3,241,266

ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY Filed July 10, 1963 4Sheets-Sheet 2 INVENTOR 5/ BY 07% 3 ATTORNEYS March 22, 1966 BOWLING, JR3,241,265

ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY Filed July 10, 1963 4Sheets-Sheet 55 Fgza 40 1 0 W W ,/40 44@ g i F II, '22: M 52 "1;; 42

F 19. 40 52 gm v M INVENTOR 1 ATTORNEYS March 22, 1966 J. E. BOWLING, JR3,241,266

ABRASIVE PARTICLE THROWING WHEEL ASSEMBLY Filed July 10, 1963 4Sheets-Sheet 4.

INVENTOR Josepk Edward Baa/High ATTORNEYS United States Patent 3,241,266ABRASIVE PARTICLE THRQWIN G WHEEL 1 ASSEMBLY Joseph Edward Bowling, Jr.,Waynesboro, Pa., assignor to The Pangborn Corporation, I-Iagerstown,Md., a corporation of Delaware Filed July 10, 1963, Ser. No. 294,007 13Claims. (Cl. 519) The present invention relates to a particle throwingwheel. More particularly, the invention relates to a rotatable wheelhaving abrasive throwing vanes extending perpendicular to one face ofthe wheel and radially of the Wheel, and to attaching means for securingthe vanes to the wheel.

The requirement for maintaining a 90 relationship of the throwing vanesor blades with the wheel or runner head is becoming more and moreimportant, and as each improvement in metal, heat treating and otherdevelopments are disclosed, the mechanical correctness of the vanepositioning in relation to the runner head is emphasized.

It is therefore one object of my invention to provide a new and novelrunner head assembly.

Another object is to provide a new and novel throwing vane or blade, anda novel and new attaching means for securing the blades to the wheel.

Other objects and advantages will become more apparent from a study ofthe following description and drawings wherein:

FIG. 1 is a segmental top view of a wheel with a single and double facedvane.

FIG. 2 is a section partially exploded taken along lines 2, 2 of FIG. 1.

FIG. 3 is a section taken along lines 3, 3 of FIG. 1.

FIG. 4 is a front view of a two face vane, looking in the direction oflines 4, 4 of FIG. 1.

FIG. 5 is a bottom view of the two faced vane illustrated in FIG. 2.

FIGS. 6, 7 and 8 are top, side and front views of the pin used inconjunction with the double faced vane shown in FIG. 3.

FIG. 9 is a section of an embodiment of a vane assembly taken alonglines 10, 10 of FIG. 1.

FIG. 10 is a front view of a single face vane looking in the directionof lines 11, 11 of FIG. 1.

FIG. 11 is a side view of the single face vane shown in FIG. 10.

FIG. 12 is a bottom view of vane shown in FIG. 11.

FIGS. 13, 14 and 15 are plan, side and front views of the pin used withthe vane shown in FIG. 11.

FIG. 16 is a section of an embodiment of a single face vane lookingsubstantially in the same direction of lines 10, 10 of FIG. 1.

FIG. 17 is a front view of the vane of FIG. 16 looking substantially inthe same direction of lines 11, 11 of FIG. 1.

FIG. 18 is a side view of the single face vane of FIG. 16.

FIG. 19 is a bottom view of the vane shown in FIG. 18.

FIGS. 20, 21 and 22 are top, side and front views of the pin used withthe vane shown in FIG. 18.

FIGS. 2330 show still another embodiment of a vane and locking pinassembly.

Referring now to the drawings, there is shown in FIGS. 1 and 2 a wheelor runner head 1 mounted upon a ro- 3,241,266 Patented Mar. 22, 1966tatable shaft 3 (FIG. 2) which is driven by a suitable drive (notshown). A double face vane 5 is shown which can be used in bothclockwise and counter-clockwise runs of the head 1. A single face bladeor vane 7 is also shown which is used for a one direction run only.

A removable ring-shaped vane locking ring 9 is also shown, the peripheryof which abuts the intermost ends of radial extending blade mountingchannels 11 cut into one face of the wheel 1. The walls of channels 11in crease in width as they extend into the face of the wheel. As seenbetter in FIG. 2, the ring 9 seats in an annular channel '13 aroundcenter stud 15 of the wheel. To mount the blades 5 or 6, the blade isintroduced at the wheel periphery into the channel 11 and movedtherealong until the innermost end of the blade abuts the stud 15. Atthis point, a wedge type locking pin 17 is inserted in the seat or hole19 in the head 1 after which the vane 5 is moved outwardly toward thewheel periphery so that the outer end of the bottom of the vane ridesover the slanted surface of the pin 17. The locking ring 9 is thenreplaced which forces the vane against the locking pin to form a tightfit.

As seen better in FIGS. 3 and 6-8 the pin 17 here has a tapered surface21 and a top fiat surface 22 which extends as a ledge beyond the pinbarrel to the wheel periphery with the bottom surface of the ledgeresting upon the channel floor. The base of the blade at the outer edgethereof by a cut-out 23' which cut-out has a complement-ary taperedsurface 21 and a flat surface 22' which tapered surface 21' abuts thepin taper 21 when the vane is in mounted position.

To provide a tight and firm fit of the vane in wheel channel 11 anelongated compression leaf spring 25 is inserted into an elongatedcut-out 27 in the inner portion of the base of the vane as the vane is.inserted in the channel 11. The spring forces the blade upwardly so thatthe tapered sides 28 of the blade (FIG. 4) are urged against theinwardly tapered side walls 29 of channel 11 in the runner head .1.

After the blade is so positioned the locking ring 9 is then put in placeand the blade is operational.

FIGS. 9-15 show, in this instance, a single faced blade 7 which whenoperational has its outermost end flush with the periphery of the head 1instead of extending therebeyond as with the embodiment of FIG. 3. Here,a different type locking pin 33 is also shown. The pin is cylindricalwith the upper surface being divided into a flat portion 35 and atapering portion 37 (also see FIGS. 13-15). The blade has acomplementary shaped cut-out 38 with a flat surface 35' and a taperedsurface 37' (see FIG. 12). The tapered surface 37' abuts the pin taper37 when operational.

The blade 7 is mounted and locked in place in the same manner asdescribed with reference to FIGS. 2-5. The blade 7 has the elongatedcut-out 27 which houses the spring 25 for forcing the blade inwardlyagainst the tapered side walls 29 of the runner head as described above.

FIGS. 16-22 show still another embodiment of blade and locking pinassembly. Here a single direction blade 40 is shown.

Here the pin 42 is cylindrical in shape and has a groove or indent 44which faces the periphery of the head 1 (see FIGS. 20-22). For removingthe pin, a screw driver blade or other blade is inserted in the indentand by wedging the blade upwardly the pin 44 is removed from its seat46.

Instead of the vane channel and the vane having complementary taperedwalls and sides 28, 29, the walls 48 of the channel (see FIG. 17) arestraight as are the sides Stl of the vane 40.

The cut-out 52 at the outer end of the blade has a curved back or innerwall 54 as shown in FIG. 16, the lower inwardly curving end of whichabuts against the pin 46 when operational. Here again, the compressionspring urges the blade upwardly to provide a firm tight fit of the bladein head 1.

FIGS. 23-30 show another embodiment of the aforedescribed blade andlocking pin assembly. As seen in FIGS. 23-27, the blade 60 is atwo-faced blade wherein either face can be used for clockwise orcounterclockwise rotation. At the innermost end of the blade 60, thefaces of the blade taper inwardly which gives a sloping surface for theabrasive being fed thereto and thus provides a better propelling path oraction of the abrasive since the forward portion of the tapered surfacewill contact and advance the abrasive before the innermost end thereofwhich will eliminate bunching of the abrasive on the blade as theabrasive is propelled outwardly along the blade face.

The lock pin 62 for the vane, the locking pin recess 64 in the wheel 1,and the locking pin recess 66 in the undersurface of the blade 60 aredifferent than those described above. Here, the recess 64 in the wheelll extends outwardly at an angle to the vertical such as the angle shownin FIG. 24. However, this angle may vary by a few degrees either way,and the 45 example is not to be taken as being limiting. The recess 66in the vane or blade 60 which cooperates with the pin 62 has acomplementary slanting wall which is wedged against the upper portion ofthe pin 62 to lock the pin in place on the wheel.

The pin 62 itself is a cylinder having a shape as shown in FIGS. 2830 ofthe drawing. The ends of the pin are parallel to each other and taper atan angle to the vertical axis of the pin with the ends taperingoutwardly toward the wheel periphery. The vane 60 is locked in placevertically by the spring 25 arrangement described in connection with theabove-described embodiments. The remaining structure is also asdescribed in connection with the other embodiments.

Obviously many modifications and variations of the present invention arepossible in the light of the above teachings. It is, therefore, to beunderstood that within the scope of the appended claims the inventionmay be practiced otherwise than as specification described.

What is claimed is:

1. A particle throwing wheel assembly comprising a rotatable wheel,radially extending vane channels extending into one face of said wheel,the width of said channels increasing as they extend into said wheelface with the thickest portion of each channel having a floor and sidewalls extending upwardly from said floor, throwing vanes mounted in saidchannels and extending perpendicular to said wheel face, each of saidvanes having a base portion disposed in a respective channel, anelongated cut-out being in each of said base portions disposed towardits channel, a compression spring resting on each floor of each channeland extending into said cut-out to urge the vane upwardly against saidchannel side walls, a locking pin seat in each floor of each channelnear the periphery of said wheel, a locking pin in each seat andextending upwardly into its respective channel, a portion of saidlocking pin extending into said channel being tapered, a second cut-outin each base portion of each vane for accommodating the tapered portionof the locking pin which extends into its channel, said second cutoutportion including a complementary tapered portion which reacts againstsaid tapered portion of its respective locking pin, means at the wheelcenter for urging each vane outwardly against its locking pin to form atight fit, a flat surface of said pin extending outwardly from the upperportion of the tapered surface of said pin and lying between the taperedsurface of said pin and the wheel periphery, and said pin terminating atsaid wheel periphery and substantially filling the space between saidsecond cut-out portion of said vane and said floor of said channel 2.The assembly of claim 1 wherein said pin has a substantial cylindricalbody portion seated in said locking seat, the end of said pin remotefrom said locking pin seat being beveled to constitute said taperedportion of said locking pin, and a fiat portion extending from saidtapered portion toward said periphery of said wheel.

3. A particle throwing vane comprising a particle throwing surfacehaving a discharge end, a base portion for afiixing the vane in a vanecarrying channel in a rotatable wheel, a cut-out portion in the baseportion for receiving a compression spring when mounted on said wheel, asecond cut-out portion in said base portion, said second cutout portiontapering upwardly and outwardly from said base portion toward saiddischarge end for accommodating a vane locking pin supported in saidchannel.

4. The particle throwing vane of claim 3 wherein the vane has doublefaced particle throwing surfaces and wherein the faces are parallel overa portion of their length and taper inwardly at the innermost end of thevane.

5. The vane of claim 3 wherein a fiat surface extends from the upper endof said tapered surface.

6. A particle throwing assembly comprising a rotatable wheel, radiallyextending throwing vane channels extending into one face of said wheel,the width of said channels increasing as they extend into said wheelface with the thickest portion of each channel being a floor and sidewalls extending upwardly from said floor, throwing vanes mounted in saidchannels and extending perpendicular from said wheel face, each of saidvanes having a base portion disposed in a respective channel, anelongated cut-out being in each of said base portions disposed towardits channel, a compression spring resting on each floor of said channeland extending into said cut-out to urge the vane upwardly against saidchannel side walls, a locking pin seat in each floor of each channelnear the periphery of said wheel, a locking pin in each seat andextending upwardly into its respective channel, a portion of saidlocking pin extending into said channel being inclined with respect tosaid wheel face, a second cut-out in each base portion of each vane foraccommodating the portion of said locking pin which extends into itschannel, said second cut-out portion including a complementary inclinedportion of its respective locking pin and means at the wheel center forurging each vane outwardly against its locking pin to form a tight fit.

7. The assembly of claim 6 wherein each vane is a double faced throwingvane, the faces of said double faced vane being parallel over a portionof their length and tapering inwardly at the end of said vane adjacentthe center of said wheel.

8. The assembly of claim 6 wherein said pin is substantially cylindricalwith its longitudinal cross section being substantially the shape of aparallelogram, one corner of said parallelogram being flattened, and theaxis of said parallelogram being inclined with respect to said wheelface.

9. The assembly of claim 6 wherein said pin is substantially cylindricalwith one end being beveled, and said beveled end constituting saidinclined portion of said pin.

10. The assembly of claim 6 wherein said pin has a substantiallycylindrical body portion seated in said locking pin seat, an end of saidpin remote from said locking seat being beveled to constitute theinclined portion,

and a flat ledge extending from said beveled end toward said peripheryof said wheel.

11. A particle throwing vane locking pin comprising a substantiallycylindrical body, the upper end of said body being beveled to provide atapered surface for abutment against a throwing vane, and a flat ledgeextending from said beveled end outwardly beyond the cylindrical portionof said body.

12. A particle throwing vane locking pin comprising [a substantiallycylindrical body, the upper end of said body being beveled to provide atapered surface for abutment against a throwing vane, and the remainingportion of said upper end being flat.

13. A particle throwing vane locking pin comprising a substantiallycylindrical body, the longitudinal cross section of said body beingsubstantially the shape of a parallelogram, and one end of said bodybeing beveled.

References Cited by the Examiner UNITED STATES PATENTS Little 151-24Marple 15124 Merwin 858.l Minich 51-9 Wasserbech 858.1 Hamren 51-9Keefer 51-9 Rosenberger 519 McKay 85-8.1 Rosenberger et al. 519 Gossard51-9 15 LESTER M. SWINGLE, Primary Examiner.

J. SPENCER OVERHOLSER, Examiner.

6. A PARTICLE THROWING ASSEMBLY COMPRISING A ROTATABLE WHEEL, RADIALLYEXTENDING THROWING VANE CHANNELS EXTENDING INTO ONE FACE OF SAID WHEEL,THE WIDTH OF SAID CHANNELS INCREASING AS THEY EXTEND INTO SAID WHEELFACE WITH THE THICKEST PORTION OF EACH CHANNEL BEING A FLOOR AND SIDEWALLS EXTENDING UPWARDLY FROM SAID FLOOR, THROWING VANES MOUNTED IN SAIDCHANNELS AND EXTENDING PERPENDICULAR FROM SAID WHEEL FACE, EACH OF SAIDVANES HAVING A BASE PORTION DISPOSED IN A RESPECTIVE CHANNEL, ANELONGATED CUT-OUT BEING IN EACH OF SAID BASE PORTIONS DISPOSED TOWARDITS CHANNEL, A COMPRESSION SPRING RESTING ON EACH FLOOR OF SAID CHANNELAND EXTENDING INTO SAID CUT-CUT TO URGE THE VANE UPWARDLY AGAINST SAIDCHANNEL SIDE WALLS, A LOCKING PIN SEAT IN EACH FLOOR OF EACH CHANNELNEAR THE PERIPHERY OF SAID WHEEL, A LOCKING PIN IN EACH SEAT ANDEXTENDING UPWARDLY INTO ITS RESPECTIVE CHANNEL, A PORTION OF SAIDLOCKING PIN EXTENDING INTO SAID CHANNEL BEING INCLINED WITH RESPECT TOSAID WHEEL FACE, A SECOND CUT-OUT IN EACH BASE PORTION OF EACH VANE FORACCOMMODATING THE PORTION OF SAID LOCKING PIN WHICH EXTENDS INTO ITSCHANNEL, SAID SECOND CUT-OUT PORTION INCLUDING A COMPLEMENTARY INCLINEDPORTION OF ITS RESPECTIVE LOCKING PIN, AND MEANS AT THE WHEEL CENTER FORURGING EACH VANE OUTWARDLY AGAINST ITS LOCKING PIN TO FORM A TIGHT FIT.